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an australopithecus, one of our ancestors; Shutterstock ID 790742188; purchase_order: -; job: -; client: -; other: -

Is it known when humans or our ancestors first started to sing?

As songs don't fossilise, this is a difficult task, point out our readers 鈥� but this doesn't stop them having a go

Lola the Cat, behind a window, London

This week鈥檚 new questions

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Is there such a thing as a ‘vegetative electron microscope’? Doubtful

Twisteddoodles has cracked it!

Tom Gauld on the science of Easter

19719.9.22 Ancient Bristlecone Pine Forest, California 2022 MITCH EPSTEIN. AMERICAN NATURE

Life

Images capture the timeless beauty of America’s ancient forests

Picture supplied by Katie Steckles for 19th April 2025 Maker column

Mathematics

This versatile piece of maths can help you solve all kinds of problems

P2H56B Weasel standing upright, Mustela nivalis, Germany

Why do many animals have white undersides?

PE5P96 Close up of two purple socks with yellow lemon detail, pegged to a washing line with two yellow clothes pegs, shot from below against a clear blue sky

Why do plastic clothes pegs fade and get brittle in the sun?

Outdoor Backpack with Water Bottle on the back of a girl, School, isolated Green background Nature. Education concept; Shutterstock ID 2038295597; purchase_order: -; job: -; client: -; other: -

Is it more efficient to cart water in a bottle or my stomach? Part 2

More readers wade into the debate on whether it is better to carry a container of water and drink when necessary or guzzle lots of fluid at once

This week鈥檚 new questions

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It’s good to have a word describing why going viral is now meaningless

Tom Gauld on moving fast and breaking things

Twisteddoodles on an unexpected arachnid